PHOTO GALLERY Roy Rogers "King of the Cowboys". What would have been even cooler, is if he had Trigger in the water with him! from the estate of Jack "The Frogman" Blocker. Jack was a prominent figure in Minnesota during those early days of scuba. He did a lot for dive training, and was a pioneer in those days. Jack "The Frogman" Blocker From the estate of Jack "The Frogman" Blocker. From the estate of Jack "The Frogman" Blocker.
